It's extremely good of you to do this for me.
你帮我做了这件事，真是太好了。
疯狂英语精华演讲卡
在美国做生意 - 额外成就感（一）
📚 句中词汇解析
从本句中提取的重要词汇
adv. 极端地;非常，很;去;绝;
💡 extreme极端的+ly表副词 →过分地
"The payment offered to the rank and file is extremely poor."
列兵的待遇极低.
近义：highly, hugely, immensely, inordinately, magnificently, mighty
反义：incompletely, nearly, poorly, barely, scantily, scarce